RT 101 changes of state

temp of lungs

typically 37 degrees celcius

energy

the ability to do work or cause change by transfer of energy

heat

total energy, transfer of thermal energy

temperature

average kinetic energy

heat capacity

amount of thermal energy that warms or cools the object by one degree celcius

specific heat capacity

the amount of thermal energy that warms or cools one gram of a material by one degree celcius

celcius conversion

C = (F - 32) / 1.8 or x 5/9

sublimation

solid to gas

increased temp

increases molecular speed, volume and pressure in gas, expands liquids, increases volume of solids

absolute humidity

actual amount (or weight) of water vapor in gas, varies with temp and pressure

relative humidity (RH)

%RH = content (absolute humidity)/saturated capacity x 100

greater surface area=

greater evaporation rate

conduction

heat transfer from touch

convection

heat transfer by movement of fluids (gas or liquid)

radiation

heat transfer by infrared waves

specific gravity

ratio of density of one fluid when compared with density of another reference substance

viscocity

force opposing fluids flow (blood 5x than water)

cohesion

attractive forces between like molecules

adhesion

attractive forces between unlike molecules

surface tension

force exerted by like molecules at liquids surface (make bubbles spherical)

Laplace’s law for a sphere

T=(PXr)/2 (tension, pressure radius) greater inward force in a smaller radius